Margin-gage.



.PATENTED FEB. 17, 1903.

GI. HI MARGIN GAGE.

APPBIOATION FILED OUT. 11, 1902.

A 0 soon 00 00.0 a

3 3.))! coo, ea 0 00 90 000 so 2 l I, so? fives coo ode 000 00 n N0 MODEL.

Y mntoz C811 BlLieber YHE NORRIS 9mm cor. PHOTO-LITNO, wxsnmcTON, B4 c.

UNITED STATES PATENT OFFICE.

CARL H. LIEBER, OF INDIANAPOLIS, INDIANA.

MARG'lN-GAGE.

SPECIFICATION forming part of Letters Patent No. 720,824, dated February 17, 1903. Application filed October 11, 1902. Serial No. 126.8%. (No model.)

.To all whom it may concern:

Be it known that I, CARL H. LIEBER, acitizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented certain new and useful Improvements in Margin-Gages, of which the following is a specification.

The object of my invention is to produce a neat, efficient, and easily-handled instrument by means of which the corners of openings may be indicated upon a mat-board, so as to facilitate the removal of the middle in producing a picture-mat, the construction of the tool being such that the point of conjunction of two margins of difierent widths maybe readily indicated as'the point of conjunction of margins of the same width and without the necessity of preliminary manipulation.

The accompanying drawings illustrate my invention.

Figure 1 is a side elevation of a desirable form of my instrument; Fig. 2, a section on line 2 2 of Fig. 1; and Fig. 3, a perspective view of a mat, showing the method of indication accomplished by my tool.

Referring now to Fig. 1, 10 indicates a sheet or plate of any desired materialsuch, for instance,as sheet metalhaving secured thereto along two adjacent edges L-shaped ribs 11 and 12, the arms of the L being at right angles to each other. Formed along the forty-five-degree line within the angle of the L through plate 10 is a series of L shaped perforations 13, 14, and 15, one arm of the perforations 13 being considerably longer than the other,these perforations being arranged, say, at intervals of one inch, one arm of perforation 15 being longer than the other arm, but not so long as the long arm of perforation 13, and these perforations being arranged at the half-inch intervals, and the arms of the perforations 14 being substantially equal, or at least different from the arms of the perforations 13 and 15, and these perforations being arranged at the quarter-inch intervals. In the form shown the sides of the perforations 13, 14:, and 15 which lie nearest to the sides of the Us 11 and 12, which, by the way, are arranged in exact alinement upon opposite faces of the plate 10, are arranged substantially at the correct indicated distance from the inner edges of the Us 11 and 12, or so tioned as ahypotenuse is perforated with a plurality of perforations 16, which perforations are arranged in alinement with the working edges of the perforations 13, 14, and 15, said perforations being of any desired formas, for instance, of a diameterjustsufficient to admit an ordinary pencil-point to pass therethrough.

In operation my instrument is laid upon the corner of a mat-board 17, the ribs 11 or 12 serving as a square or guard to properly locate the instrument upon the mat, so that the line occupied by the perforations 13, 14, and 15 will bisect the angle between the two adjacent sides of the mat, and if a mat-margin one inch wide is to be made the operator places his pencil in the first perforation 13 and following the working face of this perforation makes a mark 18 on the mat, this mark being L-shaped, with the apex lying at the exact point of intersection of the two lines of desired incision. Suppose now that a mat is desired which has a lower margin of an inch and a half and a side margin of an inch. The operator will place the instrument in position, as before, and place the point of his pencil through the perforation marked X and by this means will place a dot 19 on the mat, this dot indicating the point of intersection of the two lines of desired incision, said lines being at differing distances from the adja cent margins of the sheet. By this instrument by selecting the proper perforation 16 any desired relation of margins may be very quickly indicated.

I claim as my invention- 1. A margin-gage,consisting of a main body having guiding-guards at two adjacent edges, and a plurality of perforations arranged to form two sets of crossing series, substantially as and for the purpose set forth.

2. A margin-gage consisting of a main body having a plurality of perforations arranged to form two sets of crossing series, at different distances from the edges thereof.

3. A margin-gage consisting of a main body having guiding-guards at two adjacent edges,

guards, and two crossing series of perforations arranged in the right-angled triangle having said first series as its hypotenuse.

In witness whereof I have hereunto set my I 5 hand and seal, at Indianapolis, Indiana, this 7th day of October, A. D. 1902.

CARL H. LIEBER.

Witnesses:

ARTHUR M. H001),

JAMES A. WALSH. 

